. >> rangers found the body of the missing 6-year-old boy swept away last wednesday. the boy was wading in the river after a hike with his brother who was also swept away and had died. >> tropical storm isaac moving closer to the dom minute kin republic now, threatening to become a hurricane in two days before slamming into florida. just as republicans gather forward a national convention. it's possible because of this, it could be cancelled. >> in terms of the business of the rnc, number one thing is nominating mitt romney as our presidential candidate. paul ryan as vice presidential candidate there are plans in place and rules of the rnc in place ensuring that that will be able to occur. >> the mill stare not taking chances. they cancelled pretrial hearings for five guantanamo bay prisoners accused of launching the september 11th attacks and evacuated lawyers and families of the victims. and spencer christian is tracking isaac for us now. >> and there is two systems we're watching. one is tropical storm joyce. and there is a greater concern, tropical storm isaac. pl